[clang] [Clang][Sema] placement new initializes typedef array with correct size (PR #83124)

[Shafik Yaghmour via cfe-commits]

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@@ -0,0 +1,19 @@
+// RUN: %clang++ -S -emit-llvm -o - %s | FileCheck %s
+#include <new>
+
+// CHECK: call void @llvm.memset.p0.i64(ptr align 1 %x, i8 0, i64 8, i1 false)
+// CHECK: call void @llvm.memset.p0.i64(ptr align 16 %x, i8 0, i64 32, i1 false)
+template <typename TYPE>
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shafik wrote:

We need more test cases to make sure we are not breaking other cases. Non-dependent Vs dependent, constant Vs dynamically sized, VLA etc

https://github.com/llvm/llvm-project/pull/83124